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AQMH3615NS DC brushed motor H-bridge
AQMH3615NS DC brushed motor H-bridge
Product details
Functional Features
| ◆ Supports voltage range of 9V to 36V, with under voltage protection |
| Maximum continuous load current of 12A (without heat dissipation), 15A (simple heat dissipation), 20A (thick large heat sink) |
| Similar to L298 driving logic, it can control speed regulation, forward and reverse rotation, and braking with three wires |
| ◆ Supports full PWM and can be directly controlled by buttons for forward and reverse rotation. The effective range of PWM is 0.1% to 100.0% |
| ◆ Can provide 5V power supply for microcontrollers and other controllers |
| ◆ Interface ESD protection |
| Extremely small size, only 5.5cm x 5.5cm |
Download link for materials: http://www.akelc.com/download/show_41.html
Front of module
Back of module
Principle Overview
This H-bridge module uses a combination of gate circuits, half bridge driver chips, and MOS transistors to achieve motor forward and reverse rotation, braking, and speed control. It has the characteristics of fast response, stable and reliable, and high driving current.
| Input logic decoding:Implement decoding from L298 input signal logic to half bridge driver chip input logic using gate circuits. |
| H-bridge implementation method:Using two half bridge professional driver chips to drive MOS transistors efficiently and reliably; Using all N-type MOS transistors to form an H-bridge with extremely high output current. |
| Control circuit power supply:Using a switch power chip to provide 5V power to the internal control circuit, with a wide input voltage range and low heat generation. |
| Undervoltage protection implementation:Use a reset chip to implement undervoltage protection, and turn off the output when undervoltage occurs. |
| Signal port coupling:The input signal/5V power output port and internal circuit are consumed through interference consumption and transient interference suppression. The 5V power supply can be directly supplied to external use without causing the microcontroller to run away. |
| External interference suppression:Use ESD protection devices and electrostatic discharge circuits to provide ESD protection for all interfaces, ensuring stable operation of internal circuits and protecting internal devices from transient high voltage static electricity applied to the interfaces. |
Technical Parameter
| project | parameter |
| Power input voltage |
DC 6.5V～41V |
| output current | 12A (without heat dissipation device) 15A (simple heat dissipation device) |
| maximum output current |
20A (requires the addition of a large and thick radiator) |
| peak current | 110A |
| Maximum output power |
12V 180W |
| Maximum output current of 5V power supply | 500mA |
| Input signal port accepts voltage range | -0.5V~5.5V, above this range, a current limiting resistor needs to be added |
| Logic level voltage range | 0≤VIL≤0.8V，2.5V≤VIH≤5.5V |
| Control signal current | 50uA |
| Effective range of PWM | 0.1%～100.0% |
| Minimum effective pulse width of PWM | 200ns |
| operation temperature | -25℃～85℃ |
| External dimensions | 5.5cm×5.5cm×2cm |
interface definition
Attention: Do not connect the power interface in reverse, and the voltage should not exceed 41V, otherwise it may burn out the driver. Suggest connecting a 20A fuse in series at the power supply.
Control signal logic
| IN1 | IN2 | PWM | OUT1 and OUT2 outputs |
| 0 | 0 | × | brake |
| 1 | 1 | × | hang in the air |
| 1 | 0 | 1 | Full speed forward rotation |
| 0 | 1 | 1 | Full speed reversal |
| 1 | 0 | PWM | Forward speed regulation |
| 0 | 1 | PWM | Reverse speed regulation |
Typical Connection Example
1. Wiring method for controlling motor rotation using a microcontroller
Connect the power supply of the microcontroller to the COM of the driver module; The PWM pin is connected to the PWM output of the microcontroller for speed regulation; IN1 and IN2 are connected to two IO ports of the microcontroller, controlling the forward and reverse rotation of the motor and braking; 5V0 can provide 5V power to the microcontroller.
2. Method of using buttons to control the forward and reverse adapter wires of the motor
Among them, PB1 and PB2 are two buttons. When PB1 is pressed and PB2 is not pressed, IN1 is at a high level, IN2 is at a low level, and the motor rotates forward; When PB2 is pressed and PB1 is not pressed, IN1 is at a low level, IN2 is at a high level, and the motor reverses; When PB1 and PB2 both bounce up, IN2 and IN2 are both at a low level, and the motor brakes (or brakes).
Dimension definition
The size is 5.5cm x 5.5cm x 2cm. The installation hole diameter is 3mm, and it is recommended to use M3 screws for fixing. During installation, be careful not to short-circuit the back circuit. It is recommended to use a 1mm thick thermal conductive silicone pad to stick to the back of the module, and then use a 5mm high copper pillar to fix the module.
Download link for materials: http://www.akelc.com/download/show_41.html
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